What earth dam split type grouting material Secondary grouting material manufacturers

grouting grouting material type secondary grouting material manufacturer to fixed earth dam with grouting material splitting phenomenon, not only skills can reach perfection, and the price is very high.     One, the main use & # 8195;   Earth dam fracture grouting material progress is dam grouting anti-seepage ability and improving earth dam should do a strengthening of dam body skill measures.     Second, the key skills & # 8195;   ( 1) Fracture grouting is applied dam stress distribute rules of Dali grouting material, with certain grouting pressure, split the dam along the dam axis direction, perfusion with appropriate mud, form a straight continuous anti-seepage of mud, and blocking hole cracks or block the weak layer, dam seepage control ability, to progress together by the collapse, plasma, mutual pressure of dam and the dam body internal stress redistribute, advances the stability of the dam body.     （ 2) Splitting grouting holes arrangement, should press river section, a different part of the bank slope, bending section to design holes separation. Single configuration in river section, generally along the dam axis hole, if the quality of dam in rolling owe good, double row or three hole configuration. River section of bore cloth according to 2 ~ 3 order cloth, when end hole deep hole distance is greater than 15 m, can choose l0m around; When the hole depth is less than 15 m can choose about 5 m. Pitch can be decided by grouting experiments. In the bank slope and bending section, should be appropriate to reduce the pitch, and holes should be planning and conclude that grouting method.     （ 3) Depth of the hole depth danger should be greater than 2 ~ 3 m. Thickness of mud planning generally can choose 5 ~ 20 cm, should according to the nature of earth dam soil, roller compaction quality, danger and dam top reasonable to conclude that condition. When the penetration coefficient of the dam body is greater than or equal to 10 - 4 cm/s, or the presence of the dam upstream and downstream through the level of sand layer, should calculate the thickness of the mud, specialized and soak damage calculation and experiment research.     （ 4) Mud density of planning, according to different earth dam, different grouting method and how many request, clay content in the slurry grouting should be 1 a year later. 4 to 1. 6吨/立方米。 The choice of soil grouting material for the plastic index 8% % ~ 15 hubei grouting material suppliers, clay content 20% ~ 30%, organic matter content less than 2% of siping grouting material. In order to speed up the slurry condensation and progress later strength, can be mixed with appropriate cement, cement dosage is 15%, through the experiment concluded that when necessary.     （ 5) Promise to pressure grouting should be decided by calculation and field experiments. Grouting should be chosen grouting at the bottom of the bore hole perfusion and points sequence perfusion.     Three, the applicable scope & # 8195;   Suitable for high dam within 50 m homogeneous dam dam and relief wall. For more than 50 m homogeneous dam and dam and relief wall below 50 m of narrow core wall dam to proving by energetic after assembly.     Four, expected benefits & # 8195;   The skills of construction equipment is simple, operation is convenient, practical reinforcement effect is good, relatively low cost, has the widespread value.